APA (7th ed.) Zitazioa

Tetrazzini, L. (1923). How to sing. George H. Doran company.

Chicago Style (17th ed.) Zitazioa

Tetrazzini, Luisa. How to Sing. New York: George H. Doran company, 1923.

MLA (9th ed.) Zitazioa

Tetrazzini, Luisa. How to Sing. George H. Doran company, 1923.